So, someone who wanted that new flat screen need only pick-up the phone and say- "I decided to put this months rent to a new TV- use my security deposit."

Just flat out savings. 

If you have a busted shanty, some flat clear spaces and a fire pit which couldn't make it on AirBNB, list it on Hipcamp.

I would like to have seen photos of the basement, especially the HVAC, electric panel, main beam and supports, though with 1950 construction, you're well past the era of cedar posts and knob & tube wiring. 

It looks like your contractor gave you a flat price bid to fix/replace all of the bricks and mortar, point all 4 sides of your house. 

This BRRR will have minor reno with demo starting this weekend in the bathrooms, electrician taking a look at panels (precautionary step), flooring, trim, spackel and paint Monday. 

In your case, I’m assuming you want a flat fee or monthly percentage of rents Without paying too much in acquisition cost.

Unless you buy low or put a significant deposit down there is a risk of cash flow being flat or negative.

As far as brokerage costs and commission splits, there is a full spectrum of compensation plans - from paying a few bucks a month in office dues and a flat fee for each transaction you close, to percentage splits on commission that range from 50/50 to 95/5.Getting your real estate license is a serious investment in your profession, and should be viewed as such.

As far as fees, I'd also look to pay a flat or monthly fee.